Miniature light bulb



FIG. 1 is a top plan view of a miniature light bulb showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 4 is a side elevational view thereof taken at a right angle to FIG. 3, the opposite side being a mirror image. 

The ornamental design for a miniature light bulb, as shown and described. 